D22076: [KCM GridDelegate] Take into account implicitCellHeight for inner delegate height

[Kai Uwe Broulik]

broulik added a dependent revision: D22077: [Colors KCM] Add title bar to 
preview delegate.

REPOSITORY
  R296 KDeclarative

REVISION DETAIL
  https://phabricator.kde.org/D22076

To: broulik, #plasma, mart
Cc: kde-frameworks-devel, LeGast00n, michaelh, ngraham, bruns